1325273553 has 6 divisors (see below), whose sum is σ = 1914284034. Its totient is φ = 883515696.

The previous prime is 1325273549. The next prime is 1325273561. The reversal of 1325273553 is 3553725231.

1325273553 is a `hidden beast` number, since 1 + 32 + 5 + 2 + 73 + 553 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1309209489 + 16064064 = 36183^2 + 4008^2 .

It is not a de Polignac number, because 1325273553 - 2² = 1325273549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1325273513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73626300 + ... + 73626317.

It is an arithmetic number, because the mean of its divisors is an integer number (319047339).

Almost surely, 2^1325273553 is an apocalyptic number.

It is an amenable number.

1325273553 is a deficient number, since it is larger than the sum of its proper divisors (589010481).

1325273553 is a wasteful number, since it uses less digits than its factorization.

1325273553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147252623 (or 147252620 counting only the distinct ones).

The product of its digits is 94500, while the sum is 36.

The square root of 1325273553 is about 36404.3067919168. The cubic root of 1325273553 is about 1098.4201985933.

Adding to 1325273553 its reverse (3553725231), we get a palindrome (4878998784).

The spelling of 1325273553 in words is "one billion, three hundred twenty-five million, two hundred seventy-three thousand, five hundred fifty-three".